ASoC: Intel: KMB: Rework disable channel function
All channels are enabled at boot up, this patch ensures that all channels are disabled at boot and whenever the function is called. Signed-off-by: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com> Reviewed-by: Sia Jee Heng <jee.heng.sia@intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200730055319.1522-3-michael.wei.hong.sit@intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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d13389849c
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@ -109,14 +109,14 @@ static unsigned int kmb_pcm_rx_fn(struct kmb_i2s_info *kmb_i2s,
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static inline void kmb_i2s_disable_channels(struct kmb_i2s_info *kmb_i2s,
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u32 stream)
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{
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struct i2s_clk_config_data *config = &kmb_i2s->config;
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u32 i;
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/* Disable all channels regardless of configuration*/
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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for (i = 0; i < config->chan_nr / 2; i++)
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for (i = 0; i < MAX_ISR; i++)
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writel(0, kmb_i2s->i2s_base + TER(i));
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} else {
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for (i = 0; i < config->chan_nr / 2; i++)
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for (i = 0; i < MAX_ISR; i++)
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writel(0, kmb_i2s->i2s_base + RER(i));
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}
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}
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@ -637,6 +637,10 @@ static int kmb_plat_dai_probe(struct platform_device *pdev)
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return ret;
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}
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/* To ensure none of the channels are enabled at boot up */
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kmb_i2s_disable_channels(kmb_i2s, SNDRV_PCM_STREAM_PLAYBACK);
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kmb_i2s_disable_channels(kmb_i2s, SNDRV_PCM_STREAM_CAPTURE);
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dev_set_drvdata(dev, kmb_i2s);
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return ret;
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@ -90,6 +90,7 @@
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#define MAX_CHANNEL_NUM 8
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#define MIN_CHANNEL_NUM 2
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#define MAX_ISR 4
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#define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */
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#define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */
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